Senior Full-Stack Developer (React / Node.js) (m/f/x)

As a Senior Full-Stack Developer, you’ll play a key role in shaping the future of Business Partner Transparency (BPT) within our osapiens HUB. This enterprise-grade platform helps companies comply with critical ESG regulations like: 

• The German Supply Chain Due Diligence Act (LkSG) – ensuring suppliers uphold human rights and environmental standards. 
• The Whistleblower Directive – providing secure, anonymous reporting channels. 
• The Corporate Sustainability Due Diligence Directive (CSDDD) – upcoming EU-wide sustainability compliance. 

Our osapiens HUB is a modern, enterprise-grade development platform that enables businesses to build powerful applications without worrying about infrastructure, scaling, or failover. You’ll help develop and refine this cutting-edge, serverless ecosystem while delivering meaningful solutions for international clients. 

Activities

• Design, build, and optimize full-stack features using modern front-end and back-end technologies, ensuring scalability and maintainability. 
• Develop and enhance innovative software solutions that automate complex compliance workflows for businesses of all sizes. 
• Collaborate closely with product managers, designers, and engineers in small, agile squads (5-7 people) to define, refine, and implement features. 
• Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices. 
• Own the architecture and design of JavaScript-based solutions, optimizing for performance, reliability, and user experience. 
• Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements. 
• Mentor and support junior developers, fostering a culture of learning and technical excellence within the team. 

Requirements

• Strong experience in full-stack development with a focus on React.js, Node.js, JavaScript, and TypeScript. 
• Expertise in web services development and integration (REST, GraphQL, etc.). 
• Familiarity with Git for version control and collaboration. 
• Strong product mindset – you think beyond code, considering user experience, business impact, and scalability. 
• Agile experience – comfortable working in sprints, participating in stand-ups, and iterating quickly. 
• Excellent communication skills in English (C1). German is a bonus (B1+) 

Team

Join us for this and more...

• A purpose-driven mission with and for global industry pioneers in tackling complex challenges
• Room for creativity through collaborative teamwork and an open communication culture
• Flexibility and team bonding with our hybrid work options
• Fuel for your growth journey, both personally and professionally
• Sustainable mobility options, promoting eco-friendly commuting solutions
• Fun team events and outings with our global teams
• Inspiring workspaces in Mannheim and beyond

Application Process

• Discovery Call
• Video-Interview
• Meet the Team